YSL Arlene's Nude (121) is a neutral mauve with a satin finish that is limited edition and retails for $38.00. In comparison, Sephora Reckless (31) is a neutral mauve with a cream finish that is permanent and retails for $13.00.
Sephora Reckless (31) is 85% similar — it is more shimmery, darker, glossier.
